Sitting presidents can see them all; contrary to popular belief, they do not have a security clearance. Instead, their election to the office means that they have the trust and confidence of the American people. Former presidents, however, have no such access, and when the Justice Department demanded that Trump return what he took, (including by subpoena), he failed to do so. This is something of a mystery in itself; Trump had already handed back 15 boxes of documents, but he dug in his heels on returning anything more.

Perhaps the former president is worried about documents mixed in among other materials that could implicate him in various kinds of wrongdoing; this is my working theory, based on the fact that the search warrant cites three criminal laws, two referring to the unlawful removal and retention of records (including information that could harm the United States or aid a foreign adversary) and one regarding the destruction or concealment of documents in order to obstruct government investigations or administrative proceedings. (Interestingly, none of these laws require the information involved to be classified.)

I know it’s been said many times, but this time, Trump could finally be facing real legal trouble. In the meantime, however, we should all remain calm. If any of the materials in Trump’s possession were compromised, they may (by definition) cause exceptionally grave damage to our national security—but so far, we have no evidence that this has happened, and we should be cautious in any further speculation. I am concerned, in particular, by conversations I have seen (and some in which I have participated) on social media that suggest to me that Trump’s critics are letting their imaginations run away with them, including accusations that Trump has, or soon will, sell these secrets to America’s enemies.